Quarterly report pursuant to Section 13 or 15(d)

Gross Carrying Amount and Accumulated Amortization of Other Intangible Assets (Details)

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Gross Carrying Amount and Accumulated Amortization of Other Intangible Assets (Details) - USD ($)
$ in Thousands
6 Months Ended
Feb. 28, 2022
Aug. 31, 2021
Indefinite And Finite Lived Intangible Assets [Line Items]    
Accumulated Amortization $ 133,704 $ 130,542
Gross Carrying Value 182,312 185,087
Net Book Value 48,608 54,545
Tradenames    
Indefinite And Finite Lived Intangible Assets [Line Items]    
Gross Carrying Value 24,099 24,835
Accumulated Amortization 0 0
Net Book Value $ 24,099 24,835
Customer relationships    
Indefinite And Finite Lived Intangible Assets [Line Items]    
Weighted Average Amortization Period (Years) 14 years  
Gross Carrying Value $ 140,661 142,453
Accumulated Amortization 117,743 114,463
Net Book Value $ 22,918 27,990
Patents    
Indefinite And Finite Lived Intangible Assets [Line Items]    
Weighted Average Amortization Period (Years) 11 years  
Gross Carrying Value $ 14,289 14,492
Accumulated Amortization 13,553 13,688
Net Book Value $ 736 804
Trademarks and tradenames    
Indefinite And Finite Lived Intangible Assets [Line Items]    
Weighted Average Amortization Period (Years) 12 years  
Gross Carrying Value $ 3,263 3,307
Accumulated Amortization 2,408 2,391
Net Book Value $ 855 $ 916